I've recently found out that a married male colleague I work with is having sex with another woman. Now, I get on very well with this male colleague and we are friends. since I've found out he insists that, although he loves his wife, he doesn't have sex with her because 'it doesn't work' with her. Now, obviously, this sound like BS but I've barely met his wife and have no inclination to get involved so it's not as if he's worried that I'm going to tell his wife or anyone else.
I'm really disappointed in my friend and I'll never look at him the same way, but is it always a lie when men say they don't have sex with their wives or could he possibly be telling the truth? I'm not suggesting that would excuse him being unfaithful, but I know I would have difficulty being in a sexless relationship.